feat: 重构表单按钮部分，优化 createSection 的使用方式

src/__fk-inputs__/inputs/form.ts

@@ -23,7 +23,10 @@ export const form: FormKitTypeDefinition = {
     '$slots.default',
     messages(),
     actions(submitInput()),
-    createSection('button', () => ({
+    createSection(
+      // https://formkit.com/playground?fkv=latest&fileTab=Playground.vue&files=jc%5B%28%27name%21%27Playground.vue%27%7Eeditor%21%27%3Cscripzsetup%3EBtestUgWasyncJEqawaiznew+Promise%7Br3%3E+setTimeout%7Br%2C+5000%7D%7D-%29-BsGW%5Bq%286%24formkit142*lX1LogU2%29-%5D%3B-B_W%28qY1Uput2sG8%5B6%286*%24cmp19xbUdZsHAttrsxprops8%286Nignore8true%2C6NY1sHx*OZOx*lXZsHLXx%29%2C6*V6N%22%24lXx*%286N*ifZOxN%24el1spanxNV%22+loadUg...%22%5D6N%29%2C6*%5D6%29q%5D%2C-%29-BC3JE%29--%2F%2F+Then+we+attach+a+library-C.library3JnodeEqifJnode.props.Y3%3D%3D+%224%22%7D+%286node.defUe%7B_%7Dq%29-%29--MscriptQ-%3Cj-+%3C96YRform76%3AplugUsR%5BC%5D76%3AactionsRfalse76%40sHRtestUg7q%3E6%3C9SG+%3AsGRsG7+%2F%3E6M9Q*M9QMj%27%7Eadded%21true%29%5D*++-%5Cn18%222%22%2CqW%3D4spUnUgSH6-N7%5C%278%3A+9FormKitB-conszCcustomInputsE%7D3%3E+%28GchemaHubmitJ+%7BM%3C%2FN**OdisabledQ%3E-R%3D7UinVchildren8%5BW3+XabelYtypeZ1%24_4DefUitionjtemplateQq-*x2Nzt+%01zxqj_ZYXWVURQONMJHGECB98764321-*_&imports=jc%28%27name%21%27ImportMap%27%7Eeditor%21%27%28*+1vue%5C%211https%3A%2F%2Fcdn.jsdelivr.net%2Fnpm%2Fvue%403%2Fdist%2Fvue.esm-browser.min.js0*%29*%27%29*%5Cn0%5C%271+0%0110*_&css-framework=genesis
+      'button',
+      () => ({
         $cmp: markRaw(PButton) as never,
         bind: '$submitAttrs',
         props: {
@@ -31,7 +34,8 @@ export const form: FormKitTypeDefinition = {
           label: '$submitLabel',
           loading: '$state.loading || undefined',
         },
-    }))(),
+      }),
+    )(),
   ),
   type: 'group',
   props: [